I do have a second amp but it's a piece of **** (crunch powerzone 2250) and I wouldn't even trust it to run speakers... As of right now, I'm just going to run stock speakers/tweeters and turn the treble all the way up and the bass all the way down on my receiver... My 2001 Nissan Pathfinder has the premium boss speakers option anyway (at least premium for 2001 lol). All I really care about at the moment is some nice bass and I'm hoping that TNT will do me good lol4 awg would be great for that amp at 2 ohms. At 1 ohm I'm sure many people would suggest 2 awg or 1/0, but the 4 would still get it done.
Is this your only amp?
If you're listening to music you either have or are going to need a 2nd amp to run front speakers. Are you running a 2nd full length wire for that?
If you run 2 awg you'd be covered for another ~500w so you could have a single wire from the battery with 4 awg to the sub amp and 8 to a good sized full range amp.
You might have to trim them down or get an adapter.
And who might that be? Oh that's right.....our genius around here, Jane Kuthe...Uh oh. I hope the wire trim nazi doesn't show up and berate you for making such a suggestion. //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif